import {constantRoutes, notFont} from '../../router'
import {getRouters} from '../../api/menu'
const modules = import.meta.glob('../../views/**/*.vue')

const permission = {
    state: {
        routes: [],
        addRoutes: [],
        defaultRoutes: [],
        topbarRouters: [],
        sidebarRouters: []
    },
    mutations: {
        SET_ROUTES: (state, routes) => {
            state.addRoutes = routes
            state.routes = constantRoutes.concat(routes)
        }
    },
    actions: {
        // 生成路由
        GenerateRoutes({commit}) {
            return new Promise(resolve => {
                // 向后端请求路由数据
                getRouters().then(res => {
                    // const sdata = JSON.parse(JSON.stringify(res.data))
                    // const rdata = JSON.parse(JSON.stringify(res.data))
                    // const sidebarRoutes = filterAsyncRouter(sdata)
                    // const rewriteRoutes = filterAsyncRouter(rdata, false, true)
                    // const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
                    // rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
                    // router.addRoutes(asyncRoutes);
                    commit('SET_ROUTES', res.data)
                    const rewriteRoutes = filterAsyncRouter(res.data, true)
                    // rewriteRoutes.push(notFont)
                    resolve(rewriteRoutes)
                    // router.addRoutes(res.data)
                })
            })
        }
    }
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, type = false) {
    return asyncRouterMap.filter(route => {
        if (type && route.children) {
            route.children = filterChildren(route.children)
        }
        if (route.component) {
            route.component = loadView(route.component)
        }
        if (route.children != null && route.children && route.children.length) {
            route.children = filterAsyncRouter(route.children, route, type)
        } else {
            delete route['children']
            delete route['redirect']
        }
        return true
    })
}


function filterChildren(childrenMap, lastRouter = false) {
    var children = []
    childrenMap.forEach((el, index) => {
        if (el.children && el.children.length) {
            if (el.component === 'ParentView' && !lastRouter) {
                el.children.forEach(c => {
                    c.path = el.path + '/' + c.path
                    if (c.children && c.children.length) {
                        children = children.concat(filterChildren(c.children, c))
                        return
                    }
                    children.push(c)
                })
                return
            }
        }
        if (lastRouter) {
            el.path = lastRouter.path + '/' + el.path
        }
        children = children.concat(el)
    })
    return children
}

export const loadView = (view) => {
    let res;
    for (const path in modules) {
        const dir = path.split('views')[1].split('.vue')[0];
        if (dir === view) {
            res = () => modules[path]();
        }
    }
    return res;
}

// export const loadView = (view) => {
//     // 使用 import 实现生产环境的路由懒加载
//     return () => import(`../views/${view}.vue`)
// }
export default permission